@misc{indiciae07da313ad3be,
  title = {A magnetic anomaly near Bear Lake, Houghton County, Michigan},
  author = {James C. Wright},
  year = {1952},
  doi = {10.3133/ofr52169},
  url = {https://pubs.usgs.gov/publication/ofr52169},
  note = {Source identifier: ofr52169}
}